1, different uses: airtight buckle is made of rubber, plastic and metal, which is a special sealing material and widely used in mechanical equipment, automobile manufacturing, chemical industry, medical devices and other fields. Ordinary casing buckle is composed of casing, internal thread joint and external thread joint, which is widely used for pipeline connection of internal thread and external thread.
2. Different degrees of firmness: the gas seal buckle has the characteristics of firm connection, while the ordinary casing buckle has the characteristics of convenient connection, easy disassembly and reusability.